Omar Josué Rudberg is a Venezuelan and Swedish singer and actor. Before launching his solo music career in 2018, he gained recognition and began his professional music career in 2013 as a member of the Swedish boy band FO&O. He is best known internationally for his starring role as Simon Eriksson in the Netflix series Young Royals (2021–2024).

FO&O is a Swedish pop boy band made up of Oscar Enestad, Omar Rudberg and Felix Sandman. Originally established in October 2013 under the name the Fooo, the group changed its name to the Fooo Conspiracy in September 2014. Founding member Oscar "Olly" Molander left the group in November 2016, and the group changed its name for a third time in February 2017, to FO&O.